Home / 45,149.76-67,754.64-20,181.36

Finding the Fourth Proportional to 45,149.76, 67,754.64 and 20,181.36

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Solution

The fourth proportional to 45,149.76, 67,754.64 and 20,181.36 is: 30,285.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,149.76 : 67,754.64 = 20,181.36 : x
  2. Step 2: Convert to fraction form
    45,149.76/67,754.64 = 20,181.36/x
  3. Step 3: Cross multiply
    45,149.76x = 67,754.64 × 20,181.36
  4. Step 4: Simplify right side
    45,149.76x = 1,367,380,781.51
  5. Step 5: Solve for x
    x = 1,367,380,781.51/45,149.76
  6. Step 6: Final answer
    x = 30,285.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.